diff --git a/rust2rpm/__main__.py b/rust2rpm/__main__.py
index 747328e..55681c0 100644
--- a/rust2rpm/__main__.py
+++ b/rust2rpm/__main__.py
@@ -220,6 +220,8 @@ def main():
                         help="Do initial patching of Cargo.toml")
     parser.add_argument("-s", "--store-crate", action="store_true",
                         help="Store crate in current directory")
+    parser.add_argument("--all-features", action="store_true",
+                        help="Activate all available features")
     parser.add_argument("crate", help="crates.io name\n"
                                       "path/to/local.crate\n"
                                       "path/to/project/",
@@ -250,6 +252,7 @@ def main():
     kwargs = {}
     kwargs["crate"] = crate
     kwargs["target"] = args.target
+    kwargs["all_features"] = args.all_features
     bins = [tgt for tgt in metadata.targets if tgt.kind == "bin"]
     libs = [tgt for tgt in metadata.targets if tgt.kind in ("lib", "rlib", "proc-macro")]
     is_bin = len(bins) > 0
diff --git a/rust2rpm/templates/main.spec b/rust2rpm/templates/main.spec
index 4e9dbcf..23b8c59 100644
--- a/rust2rpm/templates/main.spec
+++ b/rust2rpm/templates/main.spec
@@ -44,7 +44,12 @@ Patch0:         {{ patch_file }}
 ExclusiveArch:  %{rust_arches}
 
 BuildRequires:  rust-packaging
+{% if not all_features %}
 {% set buildrequires = normalize_deps(md.requires("default", resolve=True))|sort %}
+{% else %}
+{% set buildrequires = normalize_deps(md.all_dependencies)|sort %}
+{% set cargo_args = " -a" %}
+{% endif %}
 {% for req in buildrequires %}
 BuildRequires:  {{ req }}
 {% endfor %}
@@ -158,14 +163,14 @@ which use {% if feature is not none %}"{{ feature }}" feature of {% endif %}"%{c
 %cargo_prep
 
 %build
-%cargo_build
+%cargo_build{{ cargo_args }}
 
 %install
-%cargo_install
+%cargo_install{{ cargo_args }}
 
 %if %{with check}
 %check
-%cargo_test
+%cargo_test{{ cargo_args }}
 %endif
 
 %changelog